Riveting-machine.



Patented July 20, 1909.

7/5624 Mi 9 m J. A. MOSHBR.

BIVETING MACHINE. APPLIOATION FILED JUNE 27, 1907.

928,783. Patented July 20, 1909.

2 SHEETS-SHEET 2.

fh'nemepi fn eiaar.

UNITED STATES PATENT OFFICE.

A. MOSHER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS & WESTLAKECOMPANY, A CORPORATION OF ILLINOIS.

RIVE TING-MACHINE.

Specification of Letters Patent.

Patented July 20, 1909.

Application filed June 27, 1907. Serial No. 381,071.

To all whom it may concern:

Be it known that I, JOHN A. MOSHER, a citizen of the United States, andresident of Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in Riveting-Machines, ofwhich the following is a specification and which are illustrated in theaccompanying drawings, forming a part thereof. v

This invention relates particularly to power-actuated riveting machines;'its ob- .ject being to provide means for forcing together theparts tobe united and holding them while the rivet is u set in order to preventan enlargement o the rivet intermediate of its ends, and it consists ofthe mechanism hereinafter described and which is illustrated in theaccompanying drawings, in which Figure 1 is a front elevation of theriveter;'Fig,,2 is a plan-view thereof; Fig. 3 is a central verticalsection on the line 33 of Fig. 1; and Fig. 4 is an inverted plan View indetail of the hammer and its carrying frame.

A pair of standards 10, 10, rise from a base-plate 11 adapted forattachment to a bench 12, and project forwardly, and are providedattheir upper ends with vertical ways, formed by an outward offset 13, 13,and a plate 14, 14, secured to the outer face of each standard andprojecting inwardly. WVithin the ways thus formed there is mounted forvertical reciprocation a carrier frame 15, within which is firmlysecured the motor for actuating the riveting hammer. In this instancethere is shown an ordinary air motor 16, and it has been foundconvenient to use for this purpose the hand tool of cominerce, itsbarrel readily adapting itself for attachment to the carry ng frame 15.

Thetframe 15 is prolonged downwardly, its lower portion being providedwith laterally projecting apertured plates or lugs 17, 18, within WhlChis fitted a tube or bushing '19, which may be secured against rotationby means of a set-screw 20, projecting through a suitable aperture inone of the platesand engaging a longitudinal slot in the bushing. Aspring 21, coiled about the bushing 19, reacts between'the upper plate17 and a flange 22 carried by the bushing to riveting hammer 23reciprocates through the bushing 19 and is acted upon by the motor inthe usual way. A pair of pressure fingers 24, 25, project downwardlyfrom the bushing 19, one on each side of the hammer 23.

The frame 15 is carried by a lever 26, swinging on a pivot 27, supportedb the standards 10, 10, the forward end 0 this lever being forked, asshown at 28, a pin 29 being set through the arms of the fork andcarrying an anti-friction roller 30, which fits within a recess 31' inthe rearward side of the frame 15. A foot lever 32 also swings upon thepivot 27 and projects downwardly through a suitable aperture in thebench 12,

its lower end being provided with a pedal 33, within easy reach of theoperators foot. A spiral spring 34 reacts between the levers 26 and 32,being carried by a curved rod 35, pivotally attached to the lever 32.and extending through an eye in the rearward end of the lever 26, theupper end of the rod 35 being threaded and a nut 36 being appliedthereto for the purpose of adjusting the tension of the spring.

The lever 32 is prolonged upwardly beyond the pivot 27 as shown at 37,and carries an adjustable abutment 38, adapted for contact with thevalve lever 39 in the handle 40 of the pneiunatic riveter. At 41 thereis shown a section of hose attached to the handle of the riveter in theusual manner for leading air thereto. An anvil 42 is detachably securedto the base plate 11, and pro jects into the path of the hammer 23, thisanvil being suitably shaped to accommodate the particular work, X, to beacted upon.

The two parts to be riveted together having been applied to the anviland a rivet Y inserted in the apertures therein, the lever 32 is swungbackwardly and upwardly by the operators foot, raising the rearward endof the lever 26 and lowering the. frame 15 and the riveter carriedthereby. When the riveting hammer 23 and the pressure fingers 24 and 25engage the work, they are of course arrested in their downward movement,and as the frame 15 continues to descend the spring 21 is compressed,the bushing 19 sliding through'the flanges 17, 18.

" The downward movement of the frame 15 is arrested by a stop 43, formedon a web 44, uniting the two standards 10, 10. The lever 32 may,however, continue to swing backwardly, compressing thespring 34 untilthe abutment 38engages the valve-stem 39 and sets the riveter motor inaction. The

pressure fingers 24, 25, hold the two parts to be united firmlytogether, thereby preventing the body of the rivet from swelling underthe influence of the blows, thus insuring more perfect workwhilerendering the operation very simple and expeditious.

I claim as my invention- 1. In a riveting machine, in combination, ananvil, a hammer, a movableframe supporting the hammer, and a pressurefinger carried by the frame for holding the work to be acted uponagainst the anvil.

2. In a riveting machine, in combination, a standard, an anvil, areciprocable frame mounted on the standard, a motor mounted on theframe, a hammer, guided by the frame and in operative connection withthe -motor, apressure finger yieldingly carried by the frame, and alever pivoted on the standard for reciprocating the frame.

3. In a riveting machine, in combination, an anvil, a reciprocable framehavm an apertured guide lug, a bushing sl1 ably mounted within the lugand provided with I a pair of pressurefingers for bearing Work againstthe anvil, a spring for advancing the bushing, and a hammer slidablewithin the bushing.

4. In a riveting machine, in combination, a standard,-an anvil, apneumatic hammer mounted ont-he standard and movable toward and from theanvil, a pair of pressure fingers yieldingly mounted with the hammer forengaging Work upon the anvil, and a lever for advancing the hammer andactuat-.

ingits valve.

5. In a riveting machine, in'combination, a standard, an anvil, apower-actuated hammer slidingly mounted on the standard, a pair ofpressure fingers yieldingly mounted with the hammer, a lever pivoted onthe standard for moving the hammer, a lever for controlling the motorand yieldingly engaging the first-mentioned lever. 1

JOHN A. MOSHER. Witnesses:

J. T. HASKELL, J. BURGE.

